CN103423108B - A kind of combined power generation device utilizing solar energy and geothermal power - Google Patents
A kind of combined power generation device utilizing solar energy and geothermal power Download PDFInfo
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- CN103423108B CN103423108B CN201210159747.2A CN201210159747A CN103423108B CN 103423108 B CN103423108 B CN 103423108B CN 201210159747 A CN201210159747 A CN 201210159747A CN 103423108 B CN103423108 B CN 103423108B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
The present invention relates to a kind of combined power generation device utilizing solar energy and geothermal power, this combined power generation device comprises: solar collector, and it heats the first working fluid for gathering solar thermal energy; Accumulation of heat storage, it is for storing the geothermal water of being extracted out by fluid pump from geothermal well; Heat exchanger, it is for heat exchange first working fluid and the second working fluid; Steam turbine, it promotes acting generating, by transport of kinetic energy to electricity generating device for receiving the second working fluid after heating; Condenser, it is connected to the outlet of steam turbine, for cooling the second working fluid flowed out from steam turbine; Condensing tower, it is connected on condenser; Operation source, it is for carrying the second working fluid in cyclic process by recycle pump.Wherein, this combined power generation device also comprises first throttle valve, and this first throttle valve can bypass solar collector, is connected with accumulation of heat storage and heat exchanger; Second throttle, it is positioned at upstream or the downstream of solar collector, passes through solar collector for opening or close the first working fluid.
Description
Technical field
The present invention relates to a kind of device of solar generating, also relate to a kind of geother-mal power generation device, utilize the combined power generation device of solar energy and geothermal power in particular to a kind of and operate the method for this combined power generation device.
Background technique
Traditional fuel energy reduces day by day, and energy problem has become the global problem that can not be ignored.Find new energy, become the task of top priority.The solar radiant energy enriched every day is inexhaustible, nexhaustible, pollution-free, cheap, is the energy that the mankind can freely utilize, becomes the optimal selection including the people visual field at first in.Solar energy arrives the energy on ground each second up to 800,000 kilowatts, if the solar energy of earth surface 0.1% is transferred to electric energy, number turnover is 5%, and every annual electricity generating capacity can reach 5.6 × 1,012 ten thousand kilowatt hours, is equivalent at present about 40 times of energy consumption in the world.China is one of abundant country of solar energy resources.There is desert area 1,080,000 square kilometres in China, is mainly distributed in the resourceful west area of illumination.
Meanwhile, the geothermal resources areal that west area (such as Tibet region) Ye Shi China is main, geothermal power generation is utilized to be the most important mode of geothermal utilization, geothermal power generation is the same with the principle of thermal power generation, all utilize the heat energy of steam to change mechanical energy in steam turbine, then drive electrical generators generating.Difference is, geothermal power generation does not resemble thermal power generation will equip huge boiler, does not also need consume fuel, can utilize from 15 DEG C to the geothermal water of 180 DEG C of scopes.The process of geothermal power generation, first changes mechanical energy into underground heat energy exactly, and then the process transformed mechanical energy into electricity.But generating of solar energy and geothermal power can being joined together becomes study hotspot increasingly, not common to both being combined in prior art yet, but its effect is predictable, it can utilize green energy resource to greatest extent, strengthen generating efficiency, reach energy-producing object continually.
Summary of the invention
An object of the present invention is to provide a kind of combined power generation device utilizing solar energy and geothermal power, the technique effect not only utilizing solar energy but also utilize geothermal power can be realized.Technological scheme of the present invention can also realize round-the-clock generating supply, has stronger application prospect.
Technological scheme of the present invention is, a kind of combined power generation device utilizing solar energy and geothermal power, and it comprises: solar collector, and it is for gathering solar thermal energy to heat the first working fluid; Accumulation of heat storage, it is for storing the geothermal water of being extracted out by fluid pump from geothermal well; Heat exchanger, it is for heat exchange first working fluid and the second working fluid; Steam turbine, it promotes acting generating, by transport of kinetic energy to electricity generating device for receiving the second working fluid after heating; Condenser, it is connected to the outlet of steam turbine, for cooling the second working fluid flowed out from steam turbine; Condensing tower, it is connected on condenser; Operation source, it, for being carried the second working fluid in cyclic process by recycle pump, is characterized in that this device also comprises: first throttle valve, and this first throttle valve can bypass solar collector, is connected with accumulation of heat storage and heat exchanger; Second throttle, it is positioned at upstream or the downstream of solar collector, passes through solar collector for opening or close the first working fluid.
Above-mentioned first working fluid be primitively hot water or through purification after geothermal water.
The preferred low-boiling point material of above-mentioned second working fluid, as fluorine Lyons, isopentane, isobutane, normal butane, chlorobutane etc.
This device can also comprise the lens devices (not shown) be arranged on above solar collector, is used for reflecting or assembling solar energy as much as possible, to be used for heated working fluid.
This device can also comprise filter, and it is positioned at fluid pump downstream, for the geothermal water that purification filtering is extracted out, prevents chemical impurity from entering cyclic process and corrodes equipment.
Operate the above-mentioned method utilizing the combined power generation device of solar energy and geothermal power, by day or fine day time, open second fluid valve, close first fluid valve, and when night or rainy day, open first fluid valve, close second fluid valve.
The technique effect of technical solution of the present invention is, the low-temperature heat energy of general about 30 ~ 50 DEG C of temperature can be utilized, realize the power generation requirements at round-the-clock (daytime or night), ensure that the stability of system, its thermal efficiency is higher, facility compact, and the size of steam turbine is little, be easy to the geothermal water of adaptation comparison of ingredients complexity, greatly provide cost savings.
Accompanying drawing explanation
Next, also with reference to accompanying drawing, technological scheme of the present invention is illustrated by preferred embodiment.
Fig. 1 represents according to the combined power generation device schematic diagram utilizing solar energy and geothermal power of the present invention;
Embodiment
What Fig. 1 showed is that it comprises: solar collector 101 according to the combined power generation device 100 utilizing solar energy and geothermal power of the present invention, and it is for gathering solar thermal energy to heat the first working fluid; Accumulation of heat storage 102, it is for storing the geothermal water of being extracted out by fluid pump 201 from geothermal well 103; Heat exchanger 104, it is for heat exchange first working fluid and the second working fluid; Steam turbine 105, it is for receiving the second working fluid after heating to promote acting generating, thus transport of kinetic energy is to electricity generating device 108; Condenser 106, it is connected to the outlet of steam turbine 105, for cooling the second working fluid flowed out from steam turbine; Condensing tower 107, it is connected on condenser 106; Operation source 109, it is for carrying the second working fluid in cyclic process by recycle pump 202, it is characterized in that this device also comprises: throttle valve 301, this throttle valve 301 can bypass solar collector 101, is connected with accumulation of heat storage 102 and heat exchanger 104; Throttle valve 302, it is positioned at upstream or the downstream of solar collector 101, for On/Off first working fluid by solar collector 101.
The working procedure of technical solution of the present invention is, by day or fine day illumination be applicable to time, open fluid valve 302, close fluid valve 301, after making the first working fluid and geothermal water (general about 40 ~ 50 DEG C of temperature) extract out from geothermal well 103 after accumulation of heat storage 102, again enter solar collector 101 and continue heating, temperature working fluid after solar collector 101 heats can reach between 70 ~ 80 DEG C, first working fluid enters heat exchanger 104 after solar collector outflow and the second working fluid carries out heat exchange, this second working fluid is preferably low-boiling point material, as fluorine Lyons, isopentane, isobutane, normal butane, chlorobutane etc.The first working fluid (general about 15 ~ 30 DEG C of temperature) after heat exchange flows back to geothermal well or separately uses it for anything else, and above process can be summarized as heat integration process.Power generation system cyclic process more below: the second working fluid is transported in circulation loop by recycle pump 202 from operation source 109, formed after the heating of over-heat-exchanger 104 and directly formed or vaporize in additional steam generator, the low boiling working steam produced directly is sent into steam turbine 105 and is generated electricity.Finish the second vapor working fluid after merit, discharged by steam turbine 105, and be condensed into liquid in condenser 106, then through recycle pump 202 recirculated work.
Sunlight is not had when night or rainy day, now close fluid valve 302, open fluid valve 301, after making the first working fluid and geothermal water (general about 40 ~ 50 DEG C of temperature) extract out from geothermal well 103 after accumulation of heat storage 102, again enter solar collector 101 and continue heating, after making the first working fluid extract out from geothermal well 103 after accumulation of heat storage 102, no longer enter solar collector 101 and continue heating, but directly enter heat exchanger 104 and the second working fluid carries out heat exchange, identical when other working procedure and daytime or fine day, although efficiency is high when the first temperature working fluid does not now have daytime or a fine day, but still can power generation needs be met.
In addition, this device can also be included in above solar collector 101 and arrange lens devices (not shown), is used for reflection or assemble solar energy as much as possible, is used for heated working fluid.
The all right filter 200 of this device, it is positioned at fluid pump 201 downstream, for the geothermal water that purification filtering is extracted out, prevents chemical impurity from entering cyclic process, corrodes equipment.
It should be noted that, in order to better describe technological scheme core content of the present invention, too much do not mention other unnecessary feature interpretation, the known technology in related domain is, the Selective type of such as solar collector, the model of filter, fluid pump and other component about the NM ins and outs of the present invention.
In technique scheme, the advantage of electricity-generating method is, can utilize low-temperature heat energy, realizes round-the-clock power generation requirements, ensure that the stability of system, its thermal efficiency is higher, facility compact, the size of steam turbine is little, is easy to the geothermal water of adaptation comparison of ingredients complexity, greatly provides cost savings.The invention is not restricted to application above, various possible being modified in the scope of dependent claims.
Claims (6)
1. utilize a combined power generation device for solar energy and geothermal power, it comprises: solar collector, and it heats the first working fluid for gathering solar thermal energy; Accumulation of heat storage, it is for storing the geothermal water of being extracted out by fluid pump from geothermal well; Heat exchanger, it is for heat exchange first working fluid and the second working fluid; Steam turbine, it is for receiving the second working fluid after heating to promote acting generating, by transport of kinetic energy to electricity generating device; Condenser, it is connected to the outlet of steam turbine, for cooling the second working fluid flowed out from steam turbine; Condensing tower, it is connected on condenser; Operation source, it is for carrying the second working fluid in cyclic process by recycle pump; It is characterized in that, this device also comprises: first throttle valve, and this first throttle valve can bypass solar collector, is connected with accumulation of heat storage and heat exchanger; Second throttle, it is positioned at upstream or the downstream of solar collector, for opening or close the first working fluid by solar collector, described first working fluid is hot water or the geothermal water after purification primitively, and described second working fluid is low-boiling point material.
2. combined power generation device as claimed in claim 1, is characterized in that: described low-boiling point material is any one in fluorine Lyons, isopentane, isobutane, normal butane, chlorobutane.
3. combined power generation device as claimed in claim 1, is characterized in that: this device also comprises the lens devices be arranged on above solar collector, and it is used for reflecting or assembling solar energy as much as possible, is used for heating described first working fluid.
4. combined power generation device as claimed in claim 1, it is characterized in that: this device also comprises filter, it is positioned at fluid pump downstream, for the geothermal water that purification filtering is extracted out, prevents chemical impurity from entering cyclic process and corrodes equipment.
5. operate a method for the combined power generation device according to any one of the claims 1-4, it is characterized in that, by day or fine day time, open second fluid valve, close first fluid valve.
6. method as claimed in claim 5, is characterized in that, when night or rainy day, opens first fluid valve, closes second fluid valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210159747.2A CN103423108B (en) | 2012-05-22 | 2012-05-22 | A kind of combined power generation device utilizing solar energy and geothermal power |
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| CN201210159747.2A CN103423108B (en) | 2012-05-22 | 2012-05-22 | A kind of combined power generation device utilizing solar energy and geothermal power |
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| CN103423108A CN103423108A (en) | 2013-12-04 |
| CN103423108B true CN103423108B (en) | 2015-12-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104612920B (en) * | 2015-02-03 | 2017-06-09 | 攀枝花学院 | Tower type solar high/low temperature complementary power generation system |
| WO2018102265A1 (en) * | 2016-11-29 | 2018-06-07 | COMBINED POWER LLC, dba HYPERLIGHT ENERGY | Systems and methods of storing energy from geothermal and solar resources |
| CN106703760B (en) * | 2016-12-29 | 2023-04-18 | 延安能源服务有限公司 | Geothermal horizontal well mining system and method |
| US11480160B1 (en) | 2021-11-16 | 2022-10-25 | King Fahd University Of Petroleum And Minerals | Hybrid solar-geothermal power generation system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201650630U (en) * | 2010-03-09 | 2010-11-24 | 上海海事大学 | Device generating electricity by solar energy and terrestrial heat |
| CN102235332A (en) * | 2010-04-27 | 2011-11-09 | 李化成 | Solar photo-thermal vapor-liquid two-phase flow thermal expansion power generating system |
| CN202545152U (en) * | 2012-05-22 | 2012-11-21 | 周登荣 | Combined solar and geothermal power generation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090121488A1 (en) * | 2007-11-08 | 2009-05-14 | Mohinder Singh Bhatti | Electric power generation system driven by solar flux and geocooling |
| US8266908B2 (en) * | 2008-06-30 | 2012-09-18 | Ormat Technologies, Inc. | Multi-heat source power plant |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201650630U (en) * | 2010-03-09 | 2010-11-24 | 上海海事大学 | Device generating electricity by solar energy and terrestrial heat |
| CN102235332A (en) * | 2010-04-27 | 2011-11-09 | 李化成 | Solar photo-thermal vapor-liquid two-phase flow thermal expansion power generating system |
| CN202545152U (en) * | 2012-05-22 | 2012-11-21 | 周登荣 | Combined solar and geothermal power generation device |
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